Misc. clean up: Development dependencies, doc build action, tox for doc...

Misc. clean up: Development dependencies, doc build action, tox for doc builds, pre-commit hook updates (#2814)

* docs: move build dependencies to tox environment

* provider: mark wheel as unsafe package

* Fix tox default configuration

* pre-commit: update hooks

* actions: add workflow for doc sanity build

* isort: update configuration to v5

* flake8: fix issues